Home / 1,458.11-2,011.86-1,223.01

Finding the Fourth Proportional to 1,458.11, 2,011.86 and 1,223.01

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Solution

The fourth proportional to 1,458.11, 2,011.86 and 1,223.01 is: 1,687.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,458.11 : 2,011.86 = 1,223.01 : x
  2. Step 2: Convert to fraction form
    1,458.11/2,011.86 = 1,223.01/x
  3. Step 3: Cross multiply
    1,458.11x = 2,011.86 × 1,223.01
  4. Step 4: Simplify right side
    1,458.11x = 2,460,524.90
  5. Step 5: Solve for x
    x = 2,460,524.90/1,458.11
  6. Step 6: Final answer
    x = 1,687.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.